72898907 has 4 divisors (see below), whose sum is σ = 77187096. Its totient is φ = 68610720.

The previous prime is 72898901. The next prime is 72898919. The reversal of 72898907 is 70989827.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72898907 - 2¹⁰ = 72897883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72898901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2144069 + ... + 2144102.

It is an arithmetic number, because the mean of its divisors is an integer number (19296774).

Almost surely, 2^72898907 is an apocalyptic number.

72898907 is a deficient number, since it is larger than the sum of its proper divisors (4288189).

72898907 is a wasteful number, since it uses less digits than its factorization.

72898907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288188.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 72898907 is about 8538.0856753724. The cubic root of 72898907 is about 417.7409072548.

The spelling of 72898907 in words is "seventy-two million, eight hundred ninety-eight thousand, nine hundred seven".